Steam-generator



(No Model.)

'W. M. BROWN.

STEAM GENERATOR. No. 409,664. Patented Aug. 2'7, 1889.

N PETERS. Phnlc-Lilhogmphen Washinglnn, u. c.

UNITED STATES PAT ENT OFFIcE.

WALTER MORTON BR-OWVN, OF ALBANY, NE\V YORK.

STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 409,664, dated August27, 18189.

Application filed June 15, 1889, Serial No. 314,439- (No model.)

enee being had to the accompanying drawings,

and to the letters and figures of reference marked thereon, which form apart of this specification.

The object of my invention is to provide a steam-boiler in which gas oroil as fuel can be burned economically and the heat or flame be appliedinternally and along the length of the boiler.

This invention is an improvement 011 that shown in my applications forpatents now pending, numbered 285,862, filed September 20, 1888, and No.290,960, filed November 15, 1888; and the improvement consists inplacing the burners or oil-atomizers outside of the boiler andprojecting the flame into the inside of the inner shell and practicallyalong its length through openings made through both shells, therebyremoving the bu rnerpipes and burners away from the intense heat insidethe inner shell, instead of subjecting them to injury from the heat byplacing them inside thereof.

In the drawings similar letters referto similar parts throughout theseveral views.

Figure 1 shows a horizontal sectional view of my boiler; and Fig. 2, across-section thereof, taken on line X X of Fig. 1.

' A shows the outside shell, which may be cylindrical or otherwise.

B shows the inside shell or cylinder running the whole length and insideof the outer shell A.

C shows a conduit laid over the shell B, and preferably welded thereto,the rear end of the conduit bein g in communication with the rearconnection and in communication with the interior of the inner shellthrough openings 1; in the top of said inner shell.

D shows a water-tube inside the inner shell and in communication withthe water in the boiler at both its ends to accelerate the circulationof the water.

E shows gas or oil burners located at the sides and outside the boiler,their tips or burners being entered through passageways J andpractically along the whole length of the boiler.

F shows air passage-ways passing from the outside and bottom of theboiler into the interior of the inner shell to supply air for thesupport of combustion inside the inner shell.

II shows a bed upon which the boiler may rest and by which the burnersmay be supported.

J are openings through the sides of the boilers through which the gas oroil burners may be entered, said openings extending practically thewhole length of the boiler.

The darts indicate the course of the prcducts of combustion.

It is evident from the drawings that the passage-ways J may be omittedand the burners or oil-atomizers be placed under the boiler andintroduced through the air-intake passage-ways F, in which case it wouldbe only necessary to make the passage-ways F of greater diameter, sothat both the burners and sufficient atmosphere can pass through theseair-intake openings. It is also evident that the burners or atomizersneed not actually enter the passage-ways, as their tips may be locatedoutside of said passage-ways and near thereto and the flame or atomizedoil be projected through said passageways. The loca tion of saidpassageways is immaterial. The water-tube D may be omitted, if desired,and in some forms of boilers-like locomotive boilers, where the servicerequired is very irregular, sometimes requiring the greatest intensityof heat and at other times the minimum intensity-it would be preferableto omit this tube D and partly fill the inside shell 13 with fire-brickso disposed as not to stop the intake of the air through the airpassageways and to protect the atomized oil or flame among this brick,as is sometimes done in oilburning furnaces; but with the arrangement ofthe burners shown in Fig. 2, when the flames are shot together,refractory material may be dispensed with.

The operation of my invention is as follows: Oil or gas being forced outat the burners E and ignited, the flame is projected into the interiorof the inner shell and practically along its entire length. The air tosupport combustion enters through openings F, and some is drawn inalongside of the burners E through the openings J, and active combustionis thereby maintained along the whole length and interior of the boiler,instead of at but one end of it, as is at present the universalpractice. The products of combustion pass immediately off through theopenings b and conduit G into the back connection, thence through theboiler-tubes to the front connection, and thence up the smoke-stack,whereby is provided a cylindrical boiler havin g a cylindrical fire-boxor combustion-chamber practically as long as the boiler and running itswhole length, in which active comb ustion is maintained from end to end,practically, by the use of gas or oil as fuel, the burners oroil-atomizers being located outside of the boiler, Where the heat willnot damage them.

I make no claim upon a boiler having two shells, the smaller locatedinside the larger, and having passage-ways leading from the outside ofthe boiler into the interior of the inner shell, as such a form ofboiler is not new. v

I make no claim upon projecting oil or gas through the sides offire-boxessuch as are universally used on locomotives-as such a mannerof injecting oil into such rectangular boxes is not new; but,

Having fully explained my invention, so that any one skilled in the artto which it appertains may make and use the same, what I do claim, andseek to secure by Letters Patent, is-

1. A longitudinal steamboiler having an internal combustion-chamberrunning practically the Whole length of the boiler and havingpassageways leading from the outside of said boiler to the interior ofthe internal combllS'DIOH-Clltlllbl and along its length, in combinationwith burners for the combustion of gas or oil arranged outside of saidboiler and along its length, said burner being introduced through saidpassage-ways leading into the interior of said combustion-chamber, inorder that the gas or oil flame may be projected into saidcombustion-chamber and along its length, substantially as described.

2. A longitudinal steam-boiler having an internal combustion-chamber'running practically the length of the boiler and having passage-waysleading from the outside of said boiler to the interior of the internalcombustion-chamber and along its length, and having other passage-waysleading from the i11- terior of the combustion-chamber along its lengththrough the steam and water space to the outside of said steam and waterspace that the products of combustion may escape, in combination withburners for the combustion of gas or oil arranged outside of said boilerand along'its length, said burners being introduced through saidpassage-ways leading into the interior of said combustion-chamber, inorder that the gas or oil flame may be projected into saidcombustion-chamber and along its length, substantially as described.

3. A longitudinal steam-boiler having an internal combustion-chamberrunning practically the whole length of the boiler and having,passage-ways leading from the outside of said boiler to the interior ofthe internal combustion-chamber and along its length, in combinationwith burners for the combustion of gas or oil arranged outside of saidboiler and along its length, said burners being in proximity to saidpassage-ways, in order that the gas or oil flame may be projectedthrough said passage-ways into said combustion-chamber and along itslength, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

\VALTER MORTON BROIVN.

Vitnesse's:

J. F. IIARRIs, I A. M. TURNER.

It ishereby certified that in Letters PatentNo, 409,664, granted August27, 1889, upon the application of Walter Morton Brown, of Albany, NewYork, for an improvement in Steam Generators, errors appear in theprinted specification requiring the following correction, viz: In line97, page 1, the Word protect, should read project,

and in line 49, page 2, the Word burner should read burners; and thatthe Letters Patent should be read with these corrections therein thatthe same may conform to the record of the case in Patent Office.

Signed, countersigned, and sealed this 1st da y of October, A. D. 1889.

[SEAL] CYRUS BUSSEY,

Assistant Secretary of the Interior. Gountersigned O. E. MITCHELL,

Commissioner offlatents.

